What is a lumen?

Lumen is a function of the science of measuring light. It is the luminous flux emitted within a unit solid angle by a point source having a uniform luminous intensidy of 1. In Englsh? A lumen is the amount of brightness a light bulb puts out. The higher the lumen, the brighter the light bulb. Lumens do follow wattages. The higher the wattage, the higher the lumens and the brighter the light bulb.Holly Eddins